Chapter 11 SSR Procedures Flashcards
When must a transponder be on?
Whenever you have one
What does a squawk code consist of?
Groups of 4 numbers (between 0-7)
What must be read back regarding squawk?
Mode and code
When can you squawk ident?
On ATC instructions
What is the squawk for emergencies and interception?
A/7700
What is squawk for comms failure?
A/7600
What is the squawk for unlawful interference?
A/7500
What is the squawk in absence of ATC instructions or due to regional procedures?
A/2000 (sometimes A/7000 in certain regional procedures)
What is the squawk code for an unserviceable transponder?
A/0000
What should be if previously indentified by an SSR code and you experience and emergency?
Maintain assigned squawk (can squawk 7700 if this is to be believed to be the best course of action)
When must mode C be selected?
Always
To what accuracy is a pilot to report altitude?
To the nearest 100ft
When is an SSR classed as serviceable?
When within 300m of correct altitude
What must be done if the transponder fails before departure?
- inform ATC
- enter N in item 10 of flight plan
- repair ASAP at nearest airport (only if required by ATC)
How must a new code be selected?
Select STBY, then new squawk and then ON
